Rubber-faced roller



Sept. 23, 1941. F, SCHUSTER' 2,257,025

RUBBER FACED ROLLER Filed July 31, 1937 i E Samy@ dering the latter unsalable.

Patented Sept). 23, 1941;

MNT oFFiCE 2,257,025 v l RUBBER-racen ROLLER Fritz Schuster, Chemnitz, Germany Application July 31, 1937, Serial No. 156,797

In Germany July 15, 1936 Claims.

This invention relates to rollers having an outer facing of rubber.- The rollers produced according to the invention are intended primarily for the treatment of textile articles, although they are in no way limited thereto.

For certain purposes,`such as the treatment of textile or other comparatively sensitive articles, it has been found very convenient to employ rollers having a facing of sponge or expanded rubber, but the primary objection associated with rollers at the present time having a facing composed of comparatively soft rubber', or even rubber at all, resides in the fact that the soft rubber facing will not properly adhere to a metallic or like base or support and after a short time will tend to become detached or at least to slip on the metallic support, with the result that during rolling operations, when a certain pressure is exceeded, the rubber facing will acquire folds or creases. This is a considerable disadvantage in the roller treatment of comparatively sensitive articles, such as textile products or the like, as if, for example, the rollers are being employed for finishing or like treatments these creases or folds in the rubber facing willoproduce blotches and discolorations on the nished article, ren- Moreover it is quite impossible to apply a facing of soft rubber to a metallic support, and it is the usual practice rst to apply to the metallic support a layer of hard rubber, and then onto the layer of hard rubber the outer soft facing, or in certain cases it may even be -necessary to employ a still further intermediate layer of medium hardness. Apart from the fact that this method considerably complicates the manufacture with consequent increase in the cost of production, there still exists the same objection that even the hard layer of rubber becomes detached from the metallic support after a short period of use.

It is accordingly the primary object of the -invention,to provide a roller of the type in quesltion having a facing composed of sponge or. ex,-

panded rubber mounted on a suitable support consisting for example of metal. wherein the' rubber facing will properly adhere to the support even after a considerableperiod of use.

A further object is to provi a rubber faced roller of this description whic simple in -design and can be readily produced at little expense.

Other objects and advantages of the invention will become apparent as the description proceeds.

According to the present invention a perfo-T (c1. rss- 271)4 rated sheet metal cylinder is immersed in a rubber solution so as to obtain a thin layer of rubber on the cylinder on al1 sides. After the immersion the solvent evaporates, and a layer 5 of rubber remains. The rubber is deposited not only on the outer and inner faces of the metallic cylinder'but also about the edges of the aper= tures, so that .there are no exposed points of the metallic cylinder. l0

or sheets of sponge or expanded rubber are placed about the cylinder and the seam or seams is or are closed by a rubber solution.- 'I'he sponge or expanded rubber is thereupon enclosed by a suitable bandage composed of linen or the like.' which is wound about the same, and the structure thus formed is subjected to vulcanisation. Under the action of the heat the thin layer of rubber on the metallic cylinder and at the seam is vulcanised and at the same time it unites with the layer of sponge or expanded rubber. Since, as stated above the thin layer of rubber encloses the metallic cylinder on all sides, the sponge or expanded rubber at the points of location oi' the apertures in the cylinder will be secured to the latter' in an encompassing fashion by the thin layer of rubber. D

The invention will now be described more fully with reference to the accompany drawing.

In the drawing: Fig. 1 is a longitudinal roller without a core.

sectional view of the Fig, 2 is a'transverse sectional view -of they roller showing a core arranged therein.

the metali ,inderl thus coated there are then placed the sheets of sponge or expanded rubber 4, which are 5 composed of linen or the like. The structure thus produced is vulcanised and the layer oi' ruby the sponge sheet metal After the evaporation of the solvent the sheet a I is the. sheet metal cylinder or support which firmly held by a bandage ber 3 caused to unite with the layerof sponge the layer 3 encompa's ng the secapertures, a layer sponge rubber securely holding the latter on the cylinder.

After. the .vulcanisation and removal of the bandage 5 the cylinder `l bearing the rubber facing 3, 4 is .assembled in the usual fashion by means of end plates" 6 secured thereto inconvenient manner, the whole being mounted on the shaft 1. IThe cylinder may be hollow or if desired there may also be provided an inner core as indicated at 8 in Fig. 2, which may be secured to the end plates 6 by means of bolts 9. In certain circumstances it may also be desirable to locate the core inposition within the cylinder or support before the application and vulcanisation of the rubber. isation the rubber will then expand inwards through the apertures 2 until it fills out the entire space intermediate of the jacket I and the core 8, resulting in a nvery firm structure.

It will be obvious that in the manner described a rubber faced roller is obtained in which the facing is entirely precluded from being detached from or slipping on the support, and that moreover when the facing has ultimately become worn a new facing may readily -be applied with little trouble.

It will also be understood that no restriction is made to` the specific form of embodiment described in the above-and that numerous modifications are quite possible without departing from the spirit of the invention.

What I claim as new and desire to secure by Letters Patent is:

1. A `roller for the treatment of textile materials comprising in combination, a metal cylinder having apertures therein distributed over the periphery thereof, a coating of rubbe'r covering the outer and inner peripheries of the cylinder, said coating extending through said apertures and engaging the edges of the metal providing said of sponge rubber arranged over the surface of said rubber coating and secured thereto, and said sponge rubber extending into said apertures and united with the rubber coating therein.

2. A roller for the treatment of textile materials comprising in combination, a metal cylinder having apertures therein distributed over the periphery thereof, a layer of compact rubber cover- During the vulcan-- ing the outer and inner peripheries of the cylinder, said compact rubber extending through said apertures and engaging the edges of the metal. without lling the apertures, a layer of sponge rubber arrangedl over the outer surface of said compact rubber layer and extending throughthe apertures and unitedto all surfaces of the compa'ct rubber layer.

3. A roller for the treatment of textile materials comprising in combination, a metal cylinder having apertures therein distributed over the periphery thereof, a layer of compact rubber covering the outer and inner peripheriesvof the cylinder, said compact rubberl extending through said apertures and engaging the edges of the metal without filling the apertures, sheets of sponge rubber arranged over the outer surfaces of said rubber layer having the edges thereof secured to each other and the' inner faces secured to the compact rubber layer.

4. A roller for the treatment of textile materials comprising in combination, a hollow perforated metal support, a core arranged within said support and having a diameter smaller than the inner diameter of said support, a layer of compact rubber covering both faces of said support and extending through the perforations to engage the edges thereof without closing the perforations, a layer of sponge rubber covering said compact rubber layer on the outer face of the support and extending through the perforations and filling the space core, and said sponge rubber being united with the compact rubber layer.

5. A roller for the treatment of textile maten rials comprising in combination, a hollow perthe metal providing ber covering the outer face foratedmetal support, a layer of compact r'ubber covering both faces of said support and extending through the perforations thereof to engage the edges of the perforations same, a layer of sponge rubof the compact rubber layerand extending through the perforations and covering the inner face of the rubber layer, and

without closing the said sponge rubber being homogeneously united to the compact rubber along the faces thereof and along the edges thereof within the perforations. FRITZ SQHUSTER.

intermediate the layer car-1 ried by the inner'face of the support and the' 

